On 4/7/2010 5:06 AM, Bruno Haible wrote: > I've got some code, written for ELF platforms, that detects whether the > pthread > library (often a separate library from libc) is linked, by doing > > #pragma weak pthread_cancel > bool pthread_in_use = (pthread_cancel != NULL); > > This code breaks in Cygwin 1.7, because the autoconf test determines that gcc > accepts #pragma weak. Not a big problem - I can surround that code with > #ifdef __ELF__
And on cygwin, since the pthread functionality is IN cygwin1.dll, you can never link a cygwin-based DLL or EXE without having the pthread symbols present. So, if you want to support "with threading" vs. "without threading" on cygwin, you have to have a configure time option, instead: #ifdef __ELF__ bool pthread_in_use = (pthread_cancel != NULL); #elif defined(__CYGWIN__) and !defined(NO_THREADS) bool pthread_in_use = true; #else bool pthread_in_use = false; #endif or something. -- Chuck -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple